Molding-machine



W. P. KRAUSE.

MOLDING MACHINE.

APPLICATION FILED rE.1o.1919.

1,340,658. Patented May 18, 1920.

2 SHEETS-SHEET l.

W. P. KRAUSE.

MOLDING MACHINE.

APPLICATION FILED FEB. I0. I9I9.

r 1,340,658, Patented May 18, 1920..

2 SHEETS-SHEET 2.

.EIIIIILQ I l entran STATES Parana" onnron.

WILLIAM P. KRAUSE, QF CHICAGO, ILLINOIS, ASSIGNOR T0 MUMFORD MOLDING MACHINE COMPANY, A CORPORATIUN OF NEVI JERSEY.

nonnina-MACHINE.

Specification of Letters Patent.

Patented May 18, 1920.

Application filed February 10, 1919. Serial No. 275,937.

To all whom t may concern:

Be it known that I, WILLIAM P. KRAUSE,

a citizen of the United States, residing at front of the table, provision being thusV made for his feet. This enables him to get a direct lift or move the flask straight up without bending unduly at the conclusion of the molding operation, and, in case of the machine utilizing actuating valves, or the like, the operator is enabled to operate said valves more readily.

Another object of the invention consists in extending therear of the base portion rearwardly of the table-carrying structure and table, so that the greater portion of the base lies to the rear of the axis of rotation of the yoke. By this construction, as will be readily seen by reference to the drawings, more support is provided for the yoke and squeeze head when the yoke is thrown into inoperative position. In other words, the tendency of the machine to tilt or rock, due to the location of the center of gravity of the yoke and allied mechanism falling to the rear of the center of the table when thrown into inoperative position, is counteracted.

These and other objects of the invention will be more fully set forth and described in the following specification, taken in connection with the accompanying drawings, in which Figure l is a side elevation of an embodiment of my invention;

Fig. 2 is a vertical transverse section, taken through the body of the machine, a portion of the cylinder being shown in elevation and other portions broken away; and

Fig. 3 is a plan view of the base portion of the machine.

Like numerals refer to like elements throughout the drawings, in which l0 designates generally the base portion of the machine. This base portion is provided with a central aperture or chamber 10a and with bearing members 10b. The base portion rests upon the bottom surface 10, the rear portion thereof being semi-circular in contour `and inclined rearwardly from top to bottom, as clearly shown in Figs. 1 and 3, for example. Thebearing members 10b are located closer to the front of the base portion than to the rear, whereby the major portion of the base l() lies to the rear of the bearing members, as shown in F igs. l and 3, for a purpose to be hereinafter described. The upper portion of the base projects forwardly, as shown in Fig. l, so that in edect the top of the base is offset forwardly with res ect to the bottom.

cated in the chamber 10a is the cylinder 11, flanged intermediate its top and bottom,

as indicated by numeral 11a, this flange resting on the top of the base and being secured thereto by bolts 12. In the embodiment shown the cylinder is provided with a piston 13 centrally apertured to reciprocate upon a fixed trunk or post 14a integral with the circular plate 14, which closely fits the interior of the cylinder, and is secured to the bottom thereof by means of screws 16. The reciprocable piston 13 carries the usual table 15, on which is supported the flask-not slliown--when molding operations are taking p ace.

The yoke 17 is secured to a pivotal shaft 18, in any suitable manner, at the lower eX- tremities ofthe yoke arms, and carries a cross-bar 19 extending across and between such yoke arms. This cross bar carries a squeezer head 20, against which the flask and its sand content may be squeezed by lifting the table 15. When no squeezing operation is contemplated, and during the filling of the flask, the yoke and squeezer head are moved to what term inoperative position, as indicated in dotted lines in Fig. 1. It will be observed that when in this position considerable displacement of weight from the center of gravity of the machine, as ordinarily constructed, occurs, normally tending to cause tilting or locking of the machine. In my construction, however, the peculiar construction of the base member 10 serves to counteract this tilting motion, by relatively constructing and arranging the y-olre bearings and bottom of the base so that the greater portion of the latter lies to the rear of the bearings 10b.

Inasmuch as the table projects upwardly vertically from the top of the base 10, it will be seen that the table is offset forwardly with respect to the bottom thereof, so that the operator of the machine, when standing at the front thereof in the molding operation, may be practically in contact with the front of the table, due to the cutting away and recession of the front of the base, which enables him to place his feet beneath the machine, so that his body is in substantial contact with the front thereof. IIe is thus enabled to lift the iaslr directly upwardly when removing the same, without having to bend his body, a convenience which will be greatly appreciated by those skilled in this art. As stated in the preamble also, where knee-actuated operating valves are provided at the front of the chine, their actuation is rendered easier by the proximity of the operator to the front of the machine.

Another advantage of my construction lies in the fact that I may provide for 1ocation of the table surface at practically any desired height by locating` the supporting flange 11a at a position necessary to locate properly the table surface, and different cylinders with the supporting flange at any desired location may be provided and readily substituted in this construction without requiring the substitution of the entire machine.

It will also be apparent that my invention is susceptible lof many modifications and iina provements, and I do not wish to be restricted to the form shown or described beyond the scope of the appended claims.

vVilhat I claim is:

l. In a device of the class described, a base member, and a cylinder member, said cylinder member being secured to the upper portion of said base and supported thereby, the axis of said base member being inclined rearwardly from top to bottom.

2. In a device of the class described, a base member, a cylinder member, said cylinder member being secured to the upper portion of said base and supported thereby, the axis of said `base member being inclined rearwardly from top to bottom', and a yoke member pivotally carried by said base and `pivoted about an axis vadjacent the front thereof.

3. In a `device of the `class described, a tubular base, and a cylinder supported thereby adjacent the top thereof,the axis of said base being inclined rearwardly from top to bottom.

il. In a device of the class described, a tubular ibase, and a cylinder `supported thereby'adj acent the top thereof,ithe axis of said base being inclined rearwardly from top to bottom, said base being provided with a chamber or .recess in the upper portion thereof,said cylinder having its bottom portiondepending into said chamber.

In testimony whereof, I have subscribed my name.

WILLIAM PfKRAUSE. 

